Eren: Eren hates how sensitive he is like he could be having a good time but when someone says something that was 'too soon' or 'cruel' he'd literally hold what they said over their head forever. Though he hates what he does he likes it at the same time bc it makes him feel powerful
Armin: Armin hates how mean he can be. Like on the outside he's an angel but inside he's always thinking about how ugly someone is, how they don't know how to dress properly, how they're a hoe, and just everything. High key it's mostly about people he hates because he has a forever burning fire in his soul
